I didn't make it clear what I meant about money. The issue now is that each district is so large that in order to have an influence beyond your own vote you need a lot of money. You can't just talk to people in your community and have a noticeable impact on the outcome. If this were the case, the public would have a lot more influence over government. As it currently stands, one form of mass manipulation or another greatly outweighs what individual activism can achieve.